You should be aware that a rope’s rated breaking strength is the optimum strength, achieved under laboratory conditions, in accordance with prescribed test procedures, on new rope, pulling at a slow, steady rate in a straight line. Real life applications normally involve many different types of forces and factors which will cause the rope to [...]
A Personal Escape Rope is a one-time use, single person lifeline that is carried as a bail-out rope in dangerous situations. A good Personal Escape Rope will balance strength, heat resistance, abrasion resistance and handling characteristics. Cancord’s Personal Escape Rope does just that. It is a kernmantle construction with a Technora® skin to protect the [...]
All ropes, particularly those used in life critical applications should be kept clean and free of dirt, chemicals and other contaminants to prevent damage and wear that will reduce the strength, effectiveness, and durability of the rope. Where ropes have been exposed to chemicals, excessive dirt or other contaminants, we recommend discarding the rope, or [...]
The actual breaking strength of any individual rope is determined by pulling the rope at a slow, steady rate in a straight line, to the point of destruction. The rated minimum breaking strength of a rope is determined using the “3 sigma” method. This means the minimum breaking strength is calculated by taking the mean [...]
Quoted breaking strength of rope is usually the optimum strength achieved under laboratory conditions, in accordance with prescribed test procedures, on new rope, pulling at a slow, steady rate in a straight line. Real life applications normally involve many different types of forces and factors which will cause the rope to fail at much reduced [...]
Even among rope manufacturers, there is not a definitive set of rules to be used in determining when a rope should be removed from service. However, the following is a list of generally agreed upon guidelines. When in doubt, it is always best to be conservative and replace the rope in question or downgrade it [...]
Knots reduce the strength of ropes by up to 50% because they cause the fibers to get distorted and to cut into each other. Some sizes of our ropes can be fitted with swaged eye terminations which are much more efficient than knots, resulting in only minimal strength loss.
While there is not a universally agreed-upon shelf life for unused nylon and polyester ropes we suggest a 10 year maximum for ropes that have been properly stored. Exposure to heat, ambient moisture, UV, exposure to higher or lower temperatures and chemicals will reduce the shelf life of the rope.
Rope should be stored in a clean, dry, well-ventilated environment, away from direct sunlight, extreme heat, and chemicals.
A quality braided rope will have a smooth, uniform appearance when new. When purchasing a new piece of rope, look down the length of the rope for possible quality concerns such as broken yarn filaments, looped or pulled strands, uneven yarn color, or any other irregularity. Broken Yarn Filaments most likely indicate the use of [...]